www.pudn.com > MirGui.rar > mircode.cpp

// mircode.cpp: implementation of the mircode class. 
// 
////////////////////////////////////////////////////////////////////// 
 
 
#include "mircode.h" 
#include "bindef.h" 
#include  
char ucase( char c ) 
{ 
//	char cres = '\0'; 
	if( c >= 'a' && c <= 'z' ) 
	{ 
		c+= 'A' - 'a'; 
		return c; 
	} 
	return c; 
} 
int hex2int( char c ) 
{ 
	if( c >= 'A' && c <= 'F' ) 
	{ 
		return (int)(c - 'A' + 10 ); 
	} 
	else if( c >= '0' && c <= '9' ) 
	{ 
		return (int)( c - '0' ); 
	} 
	return 0; 
} 
char	hextable[] = "0123456789ABCDEF"; 
char int2hex( int v ) 
{ 
	v &= 0xf; 
	return hextable[v]; 
} 
int UnNameCode( char * in, char * out ) 
{ 
	int i = 0; 
	//int size = strlen( in ); 
	while( in[i] != '\0' ) 
	{ 
		out[i] = (in[i] & 0x3f ) << 2; 
		out[i] |= (in[i + 1] & 0xc0 ) >> 6; 
		i ++; 
	} 
	out[i] = '\0'; 
	return 1; 
} 
int CodeGateCode( char * in, char * out ) 
{ 
	int lcnt = strlen( in ) ; 
	int i = 0; 
	int icode = 0; 
	int tcode = 0; 
	int hbyte = 0; 
	int lbyte = 0; 
	int _edi = 0xf667; 
	for( i = 0;i < lcnt;i ++ ) 
	{ 
		icode = ((int)in[i]) & 0xff; 
		//tcode = icode; 
		//icode = ((int)out[i]) & 0xff; 
		tcode = icode; 
		tcode ^= ((_edi & 0xffff)>>8); 
		hbyte = (tcode & 0xf0 )>>4; 
		lbyte = (tcode & 0xf ); 
		out[i * 2] = int2hex( hbyte ); 
		out[i * 2 + 1] = int2hex( lbyte ); 
		_edi = (((_edi + tcode ) * 0xce6d ) & 0xffff ) + 0x58bf; 
	} 
	out[i * 2] = '\0'; 
	return 1; 
} 
int UnGateCode( char * in, char * out ) 
{ 
	if( in == NULL ) 
		return 0; 
	int lcnt = strlen( in ) >> 1; 
	if( lcnt == 0 ) 
		return 0; 
	if( in[0] == (char)0)//'\0' ) 
		return 0; 
	int i = 0; 
	int icode = 0; 
	 
 
	int _edi = 0xf667; 
 
	for( i = 0;i < lcnt;i ++ ) 
	{ 
		out[i] = ((hex2int( ucase( in[i * 2])) & 0xf )<<4); 
		out[i] += hex2int( ucase( in[i * 2 + 1])) & 0xf; 
		icode = ((int)out[i]) & 0xff; 
		out[i] ^= ((_edi & 0xffff)>>8); 
		_edi = (((_edi + icode ) * 0xce6d ) & 0xffff ) + 0x58bf; 
 
	} 
 
	out[lcnt] = (char)0;//'\0'; 
 
	return 1; 
} 
 
int UnGameCode( char * p, BYTE * out ) 
{ 
	int	i = 0; 
	int ilen = 0, olen = 0; 
	int	iptr = 0, optr = 0; 
	BYTE	*	pb = (BYTE*)p; 
	BYTE	b1,b2,b3,b4; 
	if( p == NULL || out == NULL) 
		return 0; 
	ilen = strlen( p ); 
	if( ilen <= 0 ) 
		return 0; 
	*((DWORD*)&p[ilen]) = 0x3c3c3c; 
	olen = (ilen * 6) / 8; 
	for( i =0;i < ((ilen + 3)/4);i ++ ) 
	{ 
		b1 = (pb[iptr++] - 0x3c) & 0x3f; 
		b2 = (pb[iptr++] - 0x3c) & 0x3f; 
		b3 = (pb[iptr++] - 0x3c) & 0x3f; 
		b4 = (pb[iptr++] - 0x3c) & 0x3f; 
		out[optr++] =(( b1 & b00111111) << 2 )| ((b2 & b00110000) >> 4); 
		out[optr++] =(( b2 & b00001111) << 4 )| ((b3 & b00111100) >> 2); 
		out[optr++] =(( b3 & b00000011) << 6 )| b4; 
	} 
	out[olen] = '\0'; 
	return olen; 
} 
 
int CodeGameCode( BYTE * in, int size, BYTE * out ) 
{ 
	int i = 0,ilen = 0; 
	int idxout = 0; 
	int	idxin = 0; 
//	int icode = 0; 
	int reallen = 0; 
	ilen = size; 
	ilen = (size + 2)/3; 
	BYTE	b1,b2,b3; 
	reallen = (size  * 8 + 5) / 6; 
	 
	(*(DWORD*)&in[size])=0; 
//	ileft = size % 3; 
	for( i = 0;i < ilen;i ++ ) 
	{ 
 
		b1 = in[idxin++]; 
		b2 = in[idxin++]; 
		b3 = in[idxin++]; 
		 
		out[idxout++] = ((b1 & b11111100) >> 2)+'<';  
		out[idxout++] = (((b1 & b00000011) << 4)|((b2 & b11110000) >> 4))+'<'; 
		out[idxout++] = (((b2 & b00001111) << 2)|((b3 & b11000000) >> 6))+'<'; 
		out[idxout++] = (b3 & b00111111)+'<'; 
	} 
	out[reallen]= '\0'; 
	return 1; 
}